JPH076547B2 - Universal joint - Google Patents

Universal joint

Info

Publication number
JPH076547B2
JPH076547B2 JP62044804A JP4480487A JPH076547B2 JP H076547 B2 JPH076547 B2 JP H076547B2 JP 62044804 A JP62044804 A JP 62044804A JP 4480487 A JP4480487 A JP 4480487A JP H076547 B2 JPH076547 B2 JP H076547B2
Authority
JP
Japan
Prior art keywords
sealed space
universal joint
flexible boot
joint
grease
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP62044804A
Other languages
Japanese (ja)
Other versions
JPS63214521A (en
Inventor
晋 内田
悟 小西
Original Assignee
キ−パ−株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by キ−パ−株式会社 filed Critical キ−パ−株式会社
Priority to JP62044804A priority Critical patent/JPH076547B2/en
Priority to US07/080,974 priority patent/US4820238A/en
Priority to KR1019870011730A priority patent/KR950004790B1/en
Priority to FR878715505A priority patent/FR2611379B1/en
Publication of JPS63214521A publication Critical patent/JPS63214521A/en
Publication of JPH076547B2 publication Critical patent/JPH076547B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
    • F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
    • F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D2003/22316—Means for fastening or attaching the bellows or gaiters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
    • F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
    • F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
    • F16D2003/846—Venting arrangements for flexible seals, e.g. ventilation holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/06—Lubrication details not provided for in group F16D13/74
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S464/00—Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts
    • Y10S464/904—Homokinetic coupling
    • Y10S464/906—Torque transmitted via radially spaced balls

Description

【発明の詳細な説明】 産業上の利用分野 本発明は自動車等の伝動系に使用する自在継手に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a universal joint used for transmission systems such as automobiles.

従来の技術 従来上記自在継手として、第１の軸の一端に設けられた
内輪と第２の軸の一端に設けられた外輪とを有する継手
本体と、ゴム或いは樹脂等の高弾性材料から形成されて
いて両端がそれぞれ外輪と第１の軸とに嵌着されている
フレキシブルブーツとを備えたものが知られている。そ
してこの自在継手においては、フレキシブルブーツの内
側に、継手本体潤滑用のグリースが封入されるとともに
空気で満たされている密封空間が形成されていて、フレ
キシブルブーツが、密封空間内にグリースを密封保持す
るとともにダストや水等が外部から継手本体内部に侵入
するのを防止する役割を果している。2. Description of the Related Art Conventionally, as the universal joint, a joint body having an inner ring provided at one end of a first shaft and an outer ring provided at one end of a second shaft, and made of a highly elastic material such as rubber or resin. It is known that both ends of the boot have flexible boots fitted to the outer ring and the first shaft, respectively. In this universal joint, a grease for lubricating the joint body is filled inside the flexible boot and a sealed space filled with air is formed, and the flexible boot hermetically holds the grease in the sealed space. In addition, it plays the role of preventing dust and water from entering the inside of the joint body from the outside.

発明が解決しようとする問題点 上記フレキシブルブーツを形成するゴム或いは樹脂等は
気体透過性の材料であり、その材料を透過する気体の透
過量は、材料の内外面間の圧力差の増大及び温度上昇に
応じて増加する。従つて、密封空間に空気が満たされて
いる上記従来の自在継手において、その作動による継手
の発熱或いは周囲温度の上昇等によつて密封空間内の圧
力が上昇すると、密封空間内の空気がフレキシブルブー
ツを透過して外部へ逃げ、また自在継手が停止して継手
温度が降下すると、外部の空気がフレキシブルブーツを
透過して密封空間へ侵入するという現象が生じる。しか
して、既述の如く気体の透過量は温度上昇に応じて増加
するものであり、自在継手の作動停止中における継手温
度が低いときの気体透過量は、自在継手の作動中の継手
温度が高いときの気体透過量に比して極めて小さいため
に、密封空間から逃げた空気と同量の空気が外部から密
封空間へ侵入するには、空気の逃げに要した時間より著
しく長い時間を必要とする。従つて、自在継手が作動と
停止とを繰返すにつれて密封空間内の圧力が徐々に下降
し、それに応じてフレキシブルブーツの蛇腹部が徐々に
径方向内方へ凹んでいく。そして、フレキシブルブーツ
がこのように凹んだ状態で自在継手の作動、停止が繰り
返されると、その凹み部分の内端が継手本体内にかみ込
まれて破損される恐れが生じるという問題点がある。Problems to be Solved by the Invention The rubber or resin forming the flexible boot is a gas permeable material, and the amount of gas that permeates the material is the increase in the pressure difference between the inner and outer surfaces of the material and the temperature. Increases as you go up. Therefore, in the above-mentioned conventional universal joint in which the sealed space is filled with air, when the pressure in the sealed space rises due to heat generation of the joint due to its operation or increase in ambient temperature, the air in the sealed space becomes flexible. When the boot penetrates and escapes to the outside, and when the universal joint stops and the joint temperature drops, external air penetrates the flexible boot and enters the sealed space. Therefore, as described above, the gas permeation amount increases as the temperature rises, and the gas permeation amount when the joint temperature is low while the universal joint is not operating is Since it is extremely small compared to the amount of gas permeation at a high time, it takes significantly longer time than the time it takes for air to escape from the outside to enter the sealed space with the same amount of air that has escaped from the sealed space. And Therefore, as the universal joint repeatedly operates and stops, the pressure in the sealed space gradually decreases, and accordingly, the bellows portion of the flexible boot gradually dents radially inward. When the flexible joint is repeatedly operated and stopped in such a recessed state, the inner end of the recessed portion may be bitten into the joint body and damaged.

また、密封空間が空気で満たされている従来の自在継手
には、密封空間内に封入されているグリースが空気中の
酸素と化学的に反応して劣化するとともに、その反応に
よる酸素量の減少及び酸素がフレキシブルブーツの材料
に吸収されることによる酸素量の減少によつて密封空間
内に負圧が生じ、その負圧が徐々に上昇して上記したフ
レキシブルブーツの凹みが大きくなつていく等の問題点
もある。Also, in a conventional universal joint in which the sealed space is filled with air, the grease enclosed in the sealed space chemically reacts with oxygen in the air to deteriorate, and the amount of oxygen decreases due to the reaction. Also, a negative pressure is generated in the sealed space due to a decrease in the amount of oxygen due to the absorption of oxygen by the material of the flexible boot, the negative pressure gradually increases, and the above-mentioned depression of the flexible boot increases. There is also a problem.

本発明は上記従来の自在継手の問題点を解消する自在継
手を提供することを目的とするものである。It is an object of the present invention to provide a universal joint that solves the above problems of the conventional universal joint.

問題点を解決するための手段 本発明は、ゴム或いは樹脂等の材料を透過する気体の透
過量と、上記材料への気体の吸収度と、気体とグリース
との化学反応性とが気体の種類によつて変化する点に着
眼し、上記した形式の自在継手の密封空間に、フレキシ
ブルブーツを透過しにくくかつそのブーツの材料に吸収
されにくく、しかもグリースとの化学反応を生じること
のない窒素ガスを充填した構成にすることによつて、上
記従来技術の問題点を解決する。MEANS FOR SOLVING THE PROBLEMS The present invention is based on the fact that the amount of gas that permeates a material such as rubber or resin, the degree of absorption of the gas into the material, and the chemical reactivity between the gas and grease are the types of gas. The nitrogen gas that does not easily penetrate the flexible boot into the sealed space of the universal joint of the above-mentioned type and is hardly absorbed by the material of the boot, and does not cause a chemical reaction with grease. The above-mentioned problems of the prior art are solved by adopting a configuration in which the above is filled.

作用 本発明の自在継手においては、その作動と停止が繰返さ
れる間に密封空間からフレキシブルブーツを透過して外
部へ逃げていく窒素ガスの量とそのブーツの材料に吸収
される窒素ガスの量が極めて少なく、従つて密封空間の
圧力低下に伴うフレキシブルブーツの凹みが生じにく
い。例えばフレキシブルブーツ用の材料としてクロロブ
レンゴムを使用した場合には、その材料を透過する窒素
ガスの透過量は圧力、温度等の条件が一定である場合に
酸素ガスの透過量の約1/3であり、また空気は窒素と酸
素の混合気体と考えられることから、密封空間から外部
への窒素ガスの逃げ量は空気の場合比して極めて小さ
く、従つて密封空間内に大きな圧力低下が生じることは
ない。また、グリースが窒素ガスとの化学反応によつて
劣化することもない。Action In the universal joint of the present invention, the amount of nitrogen gas that permeates the flexible boot from the sealed space and escapes to the outside while the operation and stop are repeated, and the amount of nitrogen gas absorbed by the material of the boot is It is extremely small, and accordingly, the depression of the flexible boot due to the pressure drop in the sealed space is unlikely to occur. For example, when chlorobrene rubber is used as a material for flexible boots, the permeation amount of nitrogen gas that permeates the material is about 1/3 of the permeation amount of oxygen gas when conditions such as pressure and temperature are constant. Since air is considered to be a mixed gas of nitrogen and oxygen, the escape amount of nitrogen gas from the sealed space to the outside is extremely smaller than that of air, and therefore a large pressure drop occurs in the sealed space. There is no such thing. Further, the grease does not deteriorate due to the chemical reaction with nitrogen gas.

実施例 第１図及び第２図は本発明実施例の自在継手を示してい
る。即ちこの自在継手は、第１の軸１の一端に設けられ
た内輪２と第２の軸３の一端に設けられた外輪４とを有
する継手本体５と、蛇腹部6aの両端がそれぞれ外輪４と
第１の軸１とに嵌着されているフレキシブルブーツ６と
を備えている。上記フレキシブルブーツ６の内側には継
手本体５の潤滑用のグリースを封入する密封空間７が形
成され、この密封空間内に窒素ガスが充填されている。
なお、第１図及び第２図において、８は内輪２と外輪４
との間に設けられた回転伝達用のボール、9,9′は環状
の締付けバンドを示している。Embodiment FIG. 1 and FIG. 2 show a universal joint according to an embodiment of the present invention. That is, this universal joint includes a joint body 5 having an inner ring 2 provided at one end of the first shaft 1 and an outer ring 4 provided at one end of the second shaft 3, and both ends of the bellows portion 6a have outer rings 4 respectively. And a flexible boot 6 fitted to the first shaft 1. Inside the flexible boot 6, a sealed space 7 for enclosing the grease for lubricating the joint body 5 is formed, and the sealed space is filled with nitrogen gas.
In FIG. 1 and FIG. 2, 8 is the inner ring 2 and the outer ring 4.
Balls 9 and 9'for transmitting a rotation provided between and are annular tightening bands.

図示実施例の自在継手は上記したように密封空間７内に
窒素ガスを充填した構成になつている。従つて、自在継
手が作動と停止とを繰返しそれによつて継手温度の上
昇、降下が繰返されても、密封空間７からフレキシブル
ブーツ６を透過して、第１図に矢印ａで示したように外
部へ逃げていく窒素ガスの量は極めて少なく、またブー
ツの材料に吸収される窒素ガスの量も極めて小さいため
に、密封空間７内に大きな圧力低下が生じることがな
く、第１図に鎖線6a′で示したようにフレキシブルブー
ツの蛇腹部が径方向内方へ大きく凹むことがなく、従つ
て、蛇腹部が凹むことによるフレキシブルブーツの損傷
を防ぐことができる。即ち、フレキシブルブーツが6a′
の如く凹んだ場合には、第２図に示したように自在継手
の第１の軸１が第２の軸３に対して所定角度をなす位置
まで移動したときにフレキシブルブーツの凹んだ部分の
径方向内端部が第１の軸１と継手本体５との間に挟まれ
て継手本体にかみ込まれることによつてフレキシブルブ
ーツが損傷される恐れがあるが、図示実施例の自在継手
ではそのような損傷が生じないのである。The universal joint of the illustrated embodiment has a configuration in which the sealed space 7 is filled with nitrogen gas as described above. Therefore, even if the universal joint repeats operation and stop, and thereby the joint temperature rises and falls repeatedly, the universal joint penetrates the flexible boot 6 from the sealed space 7 and as shown by the arrow a in FIG. Since the amount of nitrogen gas that escapes to the outside is extremely small and the amount of nitrogen gas that is absorbed by the material of the boot is also extremely small, a large pressure drop does not occur in the sealed space 7, and the chain line in FIG. As shown by 6a ′, the bellows portion of the flexible boot is not largely recessed inward in the radial direction, and therefore, the flexible boot can be prevented from being damaged due to the depression of the bellows portion. That is, the flexible boot is 6a '
In the case where the flexible boot is depressed as shown in FIG. 2, when the first shaft 1 of the universal joint moves to a position forming a predetermined angle with respect to the second shaft 3, The flexible boot may be damaged by the radially inner end being sandwiched between the first shaft 1 and the joint body 5 and being bitten into the joint body. However, in the universal joint of the illustrated embodiment, No such damage occurs.

上記密封空間７内への窒素ガス及びグリースの注入は、
例えば第３図のようにして行うことができる。即ち本例
においては、まずフレキシブルブーツ６の大径端部がそ
の小径端部より下方にくるようにして自在継手を固定
し、その小径端部の側から密封空間７内に窒素注入ノズ
ル10及びグリース注入ノズル11を、これらノズルの下端
が継手本体５付近に達するまで挿入する。そしてこの状
態で窒素注入ノズル10から密封空間７内に窒素ガスを圧
力をかけて注入し、その後グリース注入ノズル11からグ
リースを注入する。このようにすれば、注入作業を行う
前に密封空間７に存在していた空気は、窒素ガスの注入
により外部へ排出されて、注入作業の完了時には密封空
間７内の空気は殆ど全て窒素ガスと入れ換えられる。そ
して、その後グリースの注入を行う。上記注入作業の後
には、ノズル10,11を取出して締付けバンド９′を締付
ければよい。Injecting nitrogen gas and grease into the sealed space 7
For example, it can be performed as shown in FIG. That is, in this example, first, the universal joint is fixed so that the large-diameter end of the flexible boot 6 is below the small-diameter end, and the nitrogen injection nozzle 10 and the nitrogen injection nozzle 10 are inserted into the sealed space 7 from the small-diameter end. The grease injection nozzles 11 are inserted until the lower ends of these nozzles reach the vicinity of the joint body 5. Then, in this state, nitrogen gas is injected under pressure from the nitrogen injection nozzle 10 into the sealed space 7, and then grease is injected from the grease injection nozzle 11. By doing so, the air existing in the sealed space 7 before the injection work is discharged to the outside by the injection of nitrogen gas, and when the injection work is completed, almost all the air in the sealed space 7 is nitrogen gas. Can be replaced with. Then, after that, grease is injected. After the injection work, the nozzles 10 and 11 may be taken out and the tightening band 9'may be tightened.

第４図は、自在継手を高温雰囲気中に放置したときの、
密封空間７の内圧の変化と放置時間との関係を示す図で
ある。同図は本発明者等の実験により得られたもので、
この実験は、自在継手を100℃の恒温槽内に放置し、経
過した時間即ち放置時間（Hr）と密封空間の内圧（mmH
g）との関係を測定することによつて行つたもので、同
図中曲線Ａは密封空間内に窒素ガスを充填した本発明の
自在継手、曲線Ｂは密封空間内に空気が満たされている
従来の自在継手を示している。同図の実験結果は、従来
の自在継手では密封空間の内圧が急激に低下し、約65時
間で大気圧になり、その後密封空間内が負圧になつてそ
の負圧が徐々に上昇していくのに対し、本発明の自在継
手においては大きな内圧の低下がなく、密封空間内が負
圧状態にならないことを示している。なお、本来ならば
内圧が負圧即ち大気圧以下にはならないはずであるが、
従来の自在継手においては、空気中の酸素がグリースと
反応しまたフレキシブルブーツの材料にかなりの量吸収
されることによつて密封空間内の酸素量が減少していく
ために、負圧が生じてそれが徐々に上昇していくものと
考えられる。Figure 4 shows the universal joint when left in a high temperature atmosphere.
It is a figure which shows the change of the internal pressure of the sealed space 7, and the leaving time. The figure is obtained by an experiment by the inventors,
In this experiment, the universal joint was left in a constant temperature bath at 100 ° C, and the elapsed time, that is, the standing time (Hr) and the internal pressure of the sealed space (mmH
g), the curve A in the figure is a universal joint of the present invention in which the sealed space is filled with nitrogen gas, and the curve B is filled with air in the sealed space. The conventional universal joint is shown. The experimental results in the figure show that the conventional universal joint drastically decreases the internal pressure of the sealed space, becomes atmospheric pressure in about 65 hours, then becomes negative pressure in the sealed space, and the negative pressure gradually increases. On the other hand, in the universal joint of the present invention, there is no large decrease in internal pressure, and it is shown that the sealed space does not become a negative pressure state. In addition, the internal pressure should not be negative pressure, that is, below atmospheric pressure.
In the conventional universal joint, negative pressure is generated because oxygen in the air reacts with grease and is absorbed by the material of the flexible boot in a considerable amount to reduce the amount of oxygen in the sealed space. It is thought that it will gradually rise.

発明の効果 以上より明らかな通り、本発明の自在継手には、密封空
間の内圧が大きく低下してフレキシブルブーツが径方向
内方に大きく変形することに起因するフレキシブルブー
ツの破損が生じる恐れがなく、しかもグリースの劣化を
生じにくいという効果がある。EFFECTS OF THE INVENTION As is apparent from the above, in the universal joint of the present invention, there is no possibility that the flexible boot is damaged due to the large decrease in the internal pressure of the sealed space and the large deformation of the flexible boot inward in the radial direction. Moreover, there is an effect that the grease is less likely to deteriorate.

【図面の簡単な説明】[Brief description of drawings]

第１図は本発明実施例の自在継手を示す断面図、第２図
は、第１の軸と第２の軸とが所定角度をなすように変位
したときの上記自在継手の状態を示す断面図、第３図は
上記自在継手の密封空間に窒素ガスとグリースとを注入
する方法の一例を示す図、第４図は自在継手を高温状態
で放置したときの密封空間の内圧と放置時間との関係
を、本発明と従来技術とを対比して示す図である。 １……第１の軸、２……内輪、３……第２の軸、４……
外輪、５……継手本体、６……フレキシブルブーツ、７
……密封空間。FIG. 1 is a sectional view showing a universal joint of an embodiment of the present invention, and FIG. 2 is a sectional view showing a state of the universal joint when the first shaft and the second shaft are displaced so as to form a predetermined angle. 3 and 4 are views showing an example of a method of injecting nitrogen gas and grease into the sealed space of the universal joint, and FIG. 4 is an internal pressure of the sealed space when the universal joint is left at a high temperature and a standing time. FIG. 3 is a diagram showing the relationship between the present invention and the related art in comparison. 1 ... 1st axis, 2 ... inner ring, 3 ... second axis, 4 ...
Outer ring, 5 ... Joint body, 6 ... Flexible boot, 7
...... Sealed space.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】第１の軸の一端に設けられた内輪と第２の
軸の一端に設けられた外輪とを有する継手本体と、両端
がそれぞれ外輪と第１の軸とに嵌着されているフレキシ
ブルブーツとを備え、そのフレキシブルブーツの内側に
継手本体潤滑用のグリースを封入する密封空間が形成さ
れている自在継手において、上記密封空間内に窒素ガス
が充填されていることを特徴とする自在継手。1. A joint body having an inner ring provided at one end of a first shaft and an outer ring provided at one end of a second shaft, and both ends fitted to the outer ring and the first shaft, respectively. A flexible boot having a sealed space for enclosing grease for lubricating the joint body inside the flexible boot, wherein the sealed space is filled with nitrogen gas. Universal joint.
JP62044804A 1987-02-27 1987-02-27 Universal joint Expired - Lifetime JPH076547B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP62044804A JPH076547B2 (en) 1987-02-27 1987-02-27 Universal joint
US07/080,974 US4820238A (en) 1987-02-27 1987-08-03 Universal joint having a flexible boot
KR1019870011730A KR950004790B1 (en) 1987-02-27 1987-10-22 Universal joint having a flexible boot
FR878715505A FR2611379B1 (en) 1987-02-27 1987-11-09 CARDAN JOINT MOUNTED IN A WATERTIGHT NITROGEN SPACE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62044804A JPH076547B2 (en) 1987-02-27 1987-02-27 Universal joint

Publications (2)

Publication Number Publication Date
JPS63214521A JPS63214521A (en) 1988-09-07
JPH076547B2 true JPH076547B2 (en) 1995-01-30

Family

ID=12701611

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62044804A Expired - Lifetime JPH076547B2 (en) 1987-02-27 1987-02-27 Universal joint

Country Status (4)

Country Link
US (1) US4820238A (en)
JP (1) JPH076547B2 (en)
KR (1) KR950004790B1 (en)
FR (1) FR2611379B1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0611452B2 (en) * 1988-03-18 1994-02-16 本田技研工業株式会社 Method and device for injecting liquid into boot for joint unit
JPH0738808U (en) * 1993-12-15 1995-07-14 エヌオーケー株式会社 boots
JPH09210130A (en) * 1996-02-07 1997-08-12 Honda Motor Co Ltd Fixing structure of cylindrical member to shaft member
US5931738A (en) * 1997-10-21 1999-08-03 Dana Corporation Universal joint assembly protected by a boot
KR20000006770A (en) * 1999-11-01 2000-02-07 전광재 flange gas charge tape
US6793581B2 (en) * 2000-12-15 2004-09-21 Gkn Driveline North America, Inc. Venting solution for constant velocity joint
DE10352223B4 (en) * 2003-11-08 2006-01-19 Daimlerchrysler Ag All-wheel drive train
JP2005337291A (en) * 2004-05-24 2005-12-08 Ntn Corp Drive shaft for all terrain vehicle
US7468000B2 (en) * 2006-01-12 2008-12-23 Delphi Technologies, Inc. Boot for universal joint
DE102006059950B4 (en) * 2006-12-19 2012-03-22 Ifa-Technologies Gmbh Sealing sleeve for vehicle propeller shafts
US8157657B2 (en) * 2007-12-19 2012-04-17 Gkn Driveline North America, Inc. Selectively expandable and contractible barrier
CN107795594A (en) * 2017-11-17 2018-03-13 北京博科测试系统股份有限公司 Underwater vibroseis and its universal driving device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1429176A (en) * 1972-07-07 1976-03-24 Gkn Transmissions Ltd Universal joints
DE2717029A1 (en) * 1977-04-04 1978-10-26 Leopold F Schmid Vehicle front wheel half shaft sealing bellows - contains medium to preserve ductility of bellows material and seal leaks
FR2414145A1 (en) * 1978-01-04 1979-08-03 Citroen Sa BELLOWS PROTECTOR TRANSMISSION SEAL
US4224808A (en) * 1979-01-15 1980-09-30 General Motors Corporation Venting arrangement for stroking universal joint
DE3009639C2 (en) * 1980-03-13 1983-01-27 Löhr & Bromkamp GmbH, 6050 Offenbach seal
JPS5837372A (en) * 1981-08-31 1983-03-04 Kiipaa Kk Flexible boot
DE3206435C2 (en) * 1982-02-23 1984-03-22 Uni-Cardan Ag, 5200 Siegburg Angularly movable cardan shaft coupling
FR2544421B1 (en) * 1983-04-15 1985-06-28 Citroen Sa IMPROVEMENTS TO THE TRANSMISSION JOINTS
EP0134284A1 (en) * 1983-09-01 1985-03-20 Hans Dipl.-Kauf. Hechler Method of reducing the oxidation of the lubrificating oil in an internal-combustion engine

Also Published As

Publication number Publication date
KR880010261A (en) 1988-10-07
FR2611379B1 (en) 1990-01-12
US4820238A (en) 1989-04-11
FR2611379A1 (en) 1988-09-02
JPS63214521A (en) 1988-09-07
KR950004790B1 (en) 1995-05-10

Similar Documents

Publication Publication Date Title
JPH076547B2 (en) Universal joint
US4559025A (en) Universal joint with bellows seal and vent
JPS5551125A (en) Retaining structure for roller and needle roller in tripod universal joint
HK1057596A1 (en) Improved ring seal
JPS5478516A (en) Reinforced india-rubber hose
US8015672B2 (en) Tightening band
ES8100451A1 (en) Safety valve for packages.
US3946557A (en) Rocket motor construction
FR2358596A1 (en) Fuel tank filling spout cap - has elastic sealing ring with two lips between cylindrical surfaces
JP2572621Y2 (en) Constant velocity joint boots for propeller shafts of automobiles
JPH0211623Y2 (en)
JPH06185532A (en) Boot for mechanical shaft coupling
JPH0211660Y2 (en)
JPH0237287Y2 (en)
JPS5360429A (en) Auxiliary accelerating pump-loaded carbureter
JP2566324Y2 (en) Constant velocity joint boots for propeller shafts
US3446022A (en) Integral motor case and nozzle for solid propellant rocket motors
JPH07145863A (en) Mounting structure for resin boot
JPS55135275A (en) Safety valve
JPS56150611A (en) Terminal device for push-pull cable
FR2422075A1 (en) Clamp fixing for vehicle engine fan pulley - has dished area contacted by large washer to absorb axial loading
JPH0721972Y2 (en) Flexible boots
SU121930A1 (en) A device for squeezing the barrel when putting on hoops
FR2272797A1 (en) Low vibration pneumatic hammer - has floating arrangement of sealing bushings to relieve them from radial loads
JPH0640387Y2 (en) Seal-off valve safety cap